
Description: StackEngine is an open-source platform for building knowledge bases and question answering systems. It allows capturing domain expertise in a structured way and using AI to augment and automate finding answers in knowledge content.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Stackato is a platform-as-a-service (PaaS) solution created by ActiveState for deploying and managing applications in the cloud. It provides an open platform to build, deploy, and scale apps in multiple languages using various frameworks.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API